Re: [PATCH 0/3] memory_hotplug: fix memory hotplug bug

From: Ni zhan Chen
Date: Thu Sep 27 2012 - 20:40:23 EST


On 09/27/2012 02:47 PM, Lai Jiangshan wrote:
We found 3 bug while we test and develop memory hotplug.

PATCH1~2: the old code does not handle node_states[N_NORMAL_MEMORY] correctly,
it corrupts the memory.

PATCH3: move the modification of zone_start_pfn into corresponding lock.

please fully test them before send out. thanks.


CC: Rob Landley <rob@xxxxxxxxxxx>
CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
CC: Jiang Liu <jiang.liu@xxxxxxxxxx>
CC: Jianguo Wu <wujianguo@xxxxxxxxxx>
CC: Kay Sievers <kay.sievers@xxxxxxxx>
CC: Greg Kroah-Hartman <gregkh@xxxxxxx>
CC: Xishi Qiu <qiuxishi@xxxxxxxxxx>
CC: Mel Gorman <mgorman@xxxxxxx>
CC: linux-doc@xxxxxxxxxxxxxxx
CC: linux-kernel@xxxxxxxxxxxxxxx
CC: linux-mm@xxxxxxxxx

Lai Jiangshan (3):
memory_hotplug: fix missing nodemask management
slub, hotplug: ignore unrelated node's hot-adding and hot-removing
memory,hotplug: Don't modify the zone_start_pfn outside of
zone_span_writelock()

Documentation/memory-hotplug.txt | 5 ++-
include/linux/memory.h | 1 +
mm/memory_hotplug.c | 96 +++++++++++++++++++++++++++++++-------
mm/page_alloc.c | 3 +-
mm/slub.c | 4 +-
5 files changed, 87 insertions(+), 22 deletions(-)


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